Miss Snark will be doing another Crap-o-meter on Dec. 15th. It will be just for hooks:--) You can find all the details at her blog but the general rules right now are you email her hook of not more than 250 words. She will post it to her blog, let you know if you hooked her. If you did, you get to send more to her to critique.
She will be posting more details as the time gets closer. She has also posted a couple examples. If you are seriously interested in getting a great hook, check back through her archives for the last Crap-o-meter and read the query letters and why or why not she'd ask for more.
Good luck y'all.
Now...off to work on my hook some:--)